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Description

Scope: The calculation of short circuit currents is a central task for power system engineers; they are essential parameters for the design of electrical equipment and installations, the operation of power systems and the analysis of outages and faults.

Short Circuit Currents gives an overview of the components within power systems with respect to the parameters needed for short circuit current calculation. It also explains how to use a system of symmetrical components to analyse different types of short circuits in power systems. The thermal and electromagnetic effects of short circuit currents on equipment and installations, short-time interference problems and measures for the limitation of short circuit currents are also discussed. Detailed calculation procedures and typical data of equipment are provided in a separate chapter for easy reference, and worked examples are included throughout.

About the author: Professor Jürgen Schlabbach obtained his Ph.D. from the Technical University of Darmstadt, Germany. He worked as a Consultant Engineer until 1992 with responsibility for the planning and design of public and industrial supply systems. Since then he has worked at the University of Applied Sciences in Bielefeld, Germany as Professor for Power System Engineering and Utilisation of Renewable Energy. His main interests are power systems planning, fault analysis, power quality, interference problems and connection of renewable energy sources to power systems, and he carries out consultancy work in these fields.

Book readership

Of interest to power system engineers

Book contents

Introduction. Theoretical Background. Calculation of Impedance of Electrical Equipment. Calculation of Short Circuit Current in A.C. Three-Phase HV-systems. Influence of Neutral Earthing on Single-Phase Short Circuit Currents. Calculation of Short Circuit Currents in Low Voltage Systems. Double Earth-Fault and Short Circuit Currents Through Earth. Factors for the Calculation of Short Circuit Currents. Calculation of Short Circuit Currents in D.C. Auxiliary Installations. Effects of Short Circuit Currents. Limitation of Short Circuit Currents. Special Problems Related to Short Circuit Currents. Data of Equipment. References. Symbols